Add replay to remaining (non-trivial) flow tests (#1020)

* Add replay to remaining (non-trivial) flow tests

Convert all remaining flow tests to do replay/compare testing.  In the course
of this:
- Move the class specific SetClock extension into its own place.
- Fix another "cyclic" foreign key (there may be another solution in this case
  because HostHistory is actually different from HistoryEntry, but that would
  require changing the way we establish priority since HostHistory is not
  distinguished from HistoryEntry in the current methodology)

core/src/test/resources/google/registry/flows/poll/poll_response_contact_transfer.xml

@@ -3,8 +3,8 @@
     <result code="1301">
       <msg>Command completed successfully; ack to dequeue</msg>
     </result>
-    <msgQ count="1" id="2-2-ROID-5-3-2000">
-      <qDate>2000-06-08T22:00:00Z</qDate>
+    <msgQ count="1" id="2-2-ROID-5-3-2010">
+      <qDate>2010-12-28T01:01:01Z</qDate>
       <msg>Transfer requested.</msg>
     </msgQ>
     <resData>
@@ -12,9 +12,9 @@
         <contact:id>sh8013</contact:id>
         <contact:trStatus>pending</contact:trStatus>
         <contact:reID>TheRegistrar</contact:reID>
-        <contact:reDate>2000-06-08T22:00:00.0Z</contact:reDate>
+        <contact:reDate>2010-12-28T01:01:01Z</contact:reDate>
         <contact:acID>NewRegistrar</contact:acID>
-        <contact:acDate>2000-06-13T22:00:00.0Z</contact:acDate>
+        <contact:acDate>2011-01-02T01:01:01Z</contact:acDate>
       </contact:trnData>
     </resData>
     <trID>